CN103668489B - Dry-spinning organic solvent reclaims and nitrogen circulation operation and device thereof - Google Patents
Dry-spinning organic solvent reclaims and nitrogen circulation operation and device thereof Download PDFInfo
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- CN103668489B CN103668489B CN201310715976.2A CN201310715976A CN103668489B CN 103668489 B CN103668489 B CN 103668489B CN 201310715976 A CN201310715976 A CN 201310715976A CN 103668489 B CN103668489 B CN 103668489B
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 37
- 239000003960 organic solvent Substances 0.000 title claims abstract description 37
- 238000000578 dry spinning Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 114
- 238000009987 spinning Methods 0.000 claims abstract description 70
- 238000012545 processing Methods 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000008676 import Effects 0.000 claims abstract description 22
- 230000008929 regeneration Effects 0.000 claims abstract description 18
- 238000011069 regeneration method Methods 0.000 claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 7
- 238000013022 venting Methods 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000000498 cooling water Substances 0.000 claims description 10
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 5
- 238000009395 breeding Methods 0.000 claims description 4
- 230000001488 breeding effect Effects 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract description 18
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 18
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002918 waste heat Substances 0.000 abstract description 2
- 208000012886 Vertigo Diseases 0.000 description 52
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 24
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920002334 Spandex Polymers 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000004759 spandex Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Dry-spinning organic solvent of the present invention reclaims and nitrogen circulation operation and device thereof, is respectively equipped with the import of high nitrogen concentration, high-temperature gas on spinning stack from top to bottom; Containing the discharge outlet of organic solvent gas; The inlet mouth of high nitrogen concentration, secondary high-temperature gas; The venting port of cooling air, gas processing loop I reclaims from the most of solvent discharge outlet expellant gas, and send the gas after runner adsorption treatment back to spinning river in Zhejiang Province together with supplementary nitrogen from import, gas processing loop II reclaims organic solvent further, and sends gas after treatment back to spinning river in Zhejiang Province from inlet mouth. In gas of the present invention, all organic solvents except the degradation productions such as dimethylamine, formaldehyde, acetic acid, methyl alcohol are condensed recovery, and treated gas organic solvent content can reach clean degree, achieves recycling of nitrogen simultaneously. The heat that in the present invention, rotary wheel regeneration needs all derives from the waste heat that spinning produces, and energy consumption is low, and processing safety increases substantially.
Description
Technical field
The present invention relates to spinning treatment facility, specifically dry-spinning organic solvent reclaims and nitrogen circulation operation and device thereof.
Background technology
Man-made fiber has been widely used in production and the life of people, and such as, polyacrylonitrile is fine main is used as knitting wool, knitted fabrics (pure spin or with wool blended) and woven fabrics, is specially adapted to make upholstery cloth, such as curtain; And spandex silk is also widely used in coated, the bale of cotton and knitting on; Recently exploitation polyimide fiber out due to the temperature resistance of its uniqueness can extensively for the manufacture of high temperature air strainer etc.
Dry-spinning is the method for conventional manufacture man-made fiber, and the spinning solution thread extruded from spinneret capillary during dry-spinning enters in spinning stack. By the effect of high temperature gas flow in path, the solvent in stoste thread being volatilized fast, the solvent vapo(u)r evaporated is taken away by hot gas stream. Stoste is solidified while sloughing solvent gradually, and extends under the effect of winding tension and attenuate and form nascent fibre.
Traditional spinning river in Zhejiang Province structure principle chart is see Fig. 1.
Being filament mouth bottom spinning river in Zhejiang Province, so must be open, in order to prevent organic solvent in the process of tow outflow from escaping into production plant from filament mouth, filament mouth must be negative pressure state, enters spinning river in Zhejiang Province with the air ensured in workshop bottom spinning river in Zhejiang Province.
In addition, spinning river in Zhejiang Province is all in the condition of high temperature in spinning process, and the organic solvent that spinning uses is the material of easily burning with blast, runs into certain density oxygen after the solvent in spinning stack flashes to gaseous state under the high temperature conditions there will be blast if entered with spinning solution thread. So constantly supplementing nitrogen in spinning process in spinning river in Zhejiang Province, to ensure that in spinning river in Zhejiang Province, oxygen concentration is lower than 11.5%.
Reclaiming organic solvent that spinning process uses and reducing nitrogen consumption in spinning process is the technical barrier that chemistry spinning industry is paid close attention to jointly.
In addition, it is the phenomenon that filament mouth flows out liquid solvent from bottom that the spinning river in Zhejiang Province of tradition structure generally exists, the present inventor thinks that the reason this phenomenon occur is after the solvent-laden gas and vapor permeation of freezing air and spinning river in Zhejiang Province owing to flowing to spinning stack from bottom, solvent condenses causes, and avoids the solution flowing out liquid solvent phenomenon from bottom filament mouth to be exactly avoid the phenomenon occurring cold and hot gas and vapor permeation bottom spinning river in Zhejiang Province.
In spinning river in Zhejiang Province to the organic solvent in the gas produced except N,N-DIMETHYLACETAMIDE (DAMc) or dimethyl formamide (DMF) except, the low boiling point organic solvents such as dimethylamine remaining in by product that in addition they produce under the high temperature conditions or solvent materials, formaldehyde, acetic acid, methyl alcohol.
Conventional process spinning river in Zhejiang Province method be not nitrogen not can recycle, be exactly the dimethylamine, formaldehyde, acetic acid, the low boiling point organic solvent such as methyl alcohol that are difficult to reclaim in waste gas or there is outwardly discharge containing the phenomenon of nitrogen-rich gas.
Summary of the invention
It is an object of the invention to for above-mentioned Problems existing and deficiency, a kind of method utilizing molecular sieve concentration runner process spinning river in Zhejiang Province waste gas is provided, not only reclaim all organic solvents except the degradation productions such as dimethylamine, formaldehyde, acetic acid, methyl alcohol, achieve recycling of nitrogen simultaneously.
The above-mentioned purpose of the present invention is achieved by the following technical programs:
Dry-spinning organic solvent reclaims and nitrogen circulation operation, is provided with spinning river in Zhejiang Province gas treating system, is respectively equipped with the import of high nitrogen concentration, high-temperature gas on spinning stack from top to bottom outside spinning stack; Containing the discharge outlet of organic solvent gas; The inlet mouth of high nitrogen concentration, secondary high-temperature gas; The venting port of cooling air, spinning river in Zhejiang Province gas treating system comprises gas processing loop I and gas processing loop II, gas processing loop I reclaims from the most of solvent discharge outlet expellant gas, and send spinning river in Zhejiang Province back to from import after the gas after runner adsorption treatment is heated to together with supplementary nitrogen the temperature of needs, the further Separation and Recovery organic solvent of gas processing loop II, and send the gas after runner adsorption treatment back to spinning river in Zhejiang Province from inlet mouth; The energy of self is utilized to complete cooling and the manipulation of regeneration of runner by the design of pipeline.
Gas processing loop I comprises interchanger, prime runner, well heater, from discharge outlet expellant gas, major part DMAc or DMF condensation after interchanger is reclaimed, this strand of air-flow becomes after clean gas is heated to the temperature of needs together with supplementary nitrogen behind prime runner treatment zone sends spinning river in Zhejiang Province back to from import, one branch road is connected interchanger and runner cooling zone, utilize autogenous energy resources cooling prime runner, clean gas part is shunted by another branch road, accesses gas processing loop II and further separate process after being connected prime rotary wheel regeneration district.
Gas processing loop II comprises water cooler, rear class runner, rear class well heater, DMAc or DMF is reclaimed further through water cooler from gas processing loop I expellant gas, this strand of air-flow sends spinning river in Zhejiang Province through rear class heater heats back to from inlet mouth behind rear class runner treatment zone, is sent to emission-control equipment after utilizing air to connect rear class runner cooling zone, the import and export of interchanger cold air, rear class rotary wheel regeneration district, water cooler.
Dry-spinning organic solvent reclaims and nitrogen circulation using appts, gas processing loop I comprises first-class heat exchanger, secondary heat exchanger, cooling water heat exchanger, refrigerated water interchanger, prime runner, well heater and blower fan, sequentially connect first-class heat exchanger hot gas from discharge outlet expellant gas to import and export, secondary heat exchanger hot gas is imported and exported, cooling water heat exchanger, refrigerated water interchanger, prime runner treatment zone, secondary heat exchanger cold air sends spinning river in Zhejiang Province back to from import after heating with nitrogen together heater via after importing and exporting, one branch road is connected from refrigerated water interchanger venting port, prime runner cooling zone is to cooling water heat exchanger inlet mouth, another branch road is sequentially connected secondary heat exchanger cold air outlet, gas processing loop II is accessed behind prime rotary wheel regeneration district.
Gas processing loop II comprises water quench device, refrigerated water water cooler, rear class runner, rear class well heater and blower fan, one-level water quench device is sequentially connected from gas processing loop I expellant gas, one-level refrigerated water water cooler, rear class runner sends spinning river in Zhejiang Province through rear class heater heats back to from inlet mouth behind treatment zone, rear class runner cooling zone is sequentially connected after one pipeline connection air, first-class heat exchanger cold air is imported and exported, rear class rotary wheel regeneration district, two grades of water quench devices, it is sent to emission-control equipment after two grades of refrigerated water water coolers (14), often prop up pipeline and it is connected to blower fan.
Runner is discotic molecules sieve concentration runner, molecular sieve is manufactured into cellular, runner is divided into runner treatment zone, rotary wheel regeneration district and region, three, runner cooling zone by dividing plate and forms air ventilation passage respectively, dividing plate does not move, runner rotates under the drive of motor, sorbing material on runner is all the time in runner treatment zone, and rotary wheel regeneration district, replaces rotation in runner cooling zone.
When the gas containing organic solvent flows through from runner treatment zone time, the organic solvent in gas is adsorbed by the sorbing material on runner, and gas becomes clean gas; When the hot gas of about about 180 DEG C of temperature flows through from rotary wheel regeneration district time, the organic solvent being adsorbed on runner can take off out attached from sorbing material, is taken away by hot gas; When cryogenic gas flows through from runner cooling zone time, runner cooling zone is cooled, and adsorptive power is recovered in runner cooling zone.
The present invention is by above-mentioned structure design, and tool has the following advantages:
1, from rotary wheel regeneration district gas out the concentration of organic solvent can be enter organic solvent concentration in the gas of runner treatment zone 3-30 doubly, and by cooling and freezing method after organic solvent concentration in regeneration gas reaches certain value, organic solvent in gas will be condensed recovery, has reclaimed all organic solvents except the degradation productions such as dimethylamine, formaldehyde, acetic acid, methyl alcohol.
2, in the gas of runner treatment zone, organic solvent content can reach clean degree, achieves recycling of nitrogen simultaneously.
3, the energy consumption that the present invention is main is the energy of the regeneration consumption of molecular sieve runner, and the heat that sieving rotary wheel regeneration due to Middle molecule of the present invention needs all derives from the waste heat that spinning produces, and energy consumption is low.
4, in the present invention, the air entering spinning river in Zhejiang Province bottom spinning stack is entered the airflow-resistive of spinning river in Zhejiang Province from c point, and in the I of gas processing loop, oxygen content is low, and spinning operation security increases substantially.
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing explanation
Fig. 1 is traditional spinning river in Zhejiang Province structure principle chart;
Fig. 2 is a kind of structural representation of the present invention;
Fig. 3 is the structure principle chart of runner of the present invention.
Embodiment
As shown in Figure 2, dry-spinning organic solvent of the present invention reclaims and nitrogen circulation operation and device thereof, and a is the import of high nitrogen concentration, high-temperature gas; B is the discharge outlet containing organic solvent gas; C is the inlet mouth of high nitrogen concentration, secondary high-temperature gas; D is the venting port of cooling air, d point has installed an exhaust fan, its function utilizes workshop air cooling tow, from d point expellant gas, major part is the air entered bottom spinning river in Zhejiang Province, it is the gas containing nitrogen entering spinning river in Zhejiang Province from c point on a small quantity, not containing any organic solvent from the air that d point is discharged; In addition, the air entered bottom spinning river in Zhejiang Province does not enter the gas treating system of spinning river in Zhejiang Province. Therefore, the present invention there is no to occur the phenomenon that the gas oxygen Gas content causing spinning river in Zhejiang Province because of the air entered bottom spinning river in Zhejiang Province increases.
Containing the discharge outlet b of organic solvent gas through spinning river in Zhejiang Province gas treating system respectively inlet mouth c with the import a of high nitrogen concentration, high-temperature gas, high nitrogen concentration, secondary high-temperature gas be connected.
It is specially, spinning river in Zhejiang Province gas treating system comprises gas processing loop I and gas processing loop II, gas processing loop I reclaims from the most of solvent discharge outlet b expellant gas, and send the gas after runner adsorption treatment back to spinning river in Zhejiang Province together with nitrogen from import a, the further Separation and Recovery organic solvent of gas processing loop II, and send the gas after runner adsorption treatment back to spinning river in Zhejiang Province from inlet mouth c;
As shown in Figure 3, runner 1-1 is discotic molecules sieve concentration runner, molecular sieve is manufactured into cellular, runner 1-1 is divided into runner treatment zone 1-6, rotary wheel regeneration district 1-7 and runner cooling zone 1-5 tri-regions by dividing plate 1-2 and forms air ventilation passage respectively, dividing plate 1-2 does not move, and runner 1-1 rotates under the drive of motor 1-8, and the sorbing material on runner 1-1 is all the time at runner treatment zone 1-6, rotary wheel regeneration district 1-7, alternately rotation in the 1-5 of runner cooling zone.
As shown in Figure 2, gas processing loop I comprises first-class heat exchanger 15, secondary heat exchanger 1, cooling water heat exchanger 2, refrigerated water interchanger 3, prime runner 4, well heater 12 and blower fan 5,6,7, from import a sends spinning river in Zhejiang Province be heated to the temperature of needs with nitrogen together heater via 12 after after sequentially connecting the import and export of first-class heat exchanger 15 hot gas, the import and export of secondary heat exchanger 1 hot gas, cooling water heat exchanger 2, refrigerated water interchanger 3, prime runner 4 treatment zone, blower fan 5, the import and export of secondary heat exchanger 1 cold air from discharge outlet b expellant gas; Reclaim from major part DMAc or the DMF condensation after cooling water heat exchanger 2 with refrigerated water interchanger 3 of b point expellant gas, this strand of air-flow discharges clean gas behind prime runner 4 treatment zone, the function supplementing nitrogen ensures that a point in spinning river in Zhejiang Province is in slight positive pressure state to the space, spinning river in Zhejiang Province of b point, prevents oxygen in air from entering the space, spinning river in Zhejiang Province of a point to b point.
One branch road is connected from refrigerated water interchanger 3 venting port, prime runner 4 cooling zone, blower fan 6 to cooling water heat exchanger 2 inlet mouth, utilizes autogenous energy resources cooling prime runner.
After another branch road is sequentially connected secondary heat exchanger 1 cold air outlet, prime runner 4 breeding blanket, blower fan 7, access gas processing loop II carries out separating treatment further, containing degradation productions such as DMAc or DMF and dimethylamine in a small amount, formaldehyde, acetic acid, methyl alcohol in this strand of air-flow.
Gas processing loop II comprise water quench device 11,17, refrigerated water water cooler 10,14, rear class runner 9, rear class well heater 8 and blower fan 12,13, heating through rear class well heater 8 after sequentially connecting one-level water quench device 11, one-level refrigerated water water cooler 10, rear class runner 9 treatment zone, blower fan 13 from gas processing loop I expellant gas and send spinning river in Zhejiang Province back to from inlet mouth c, major part DMAc or DMF condensation after one-level water quench device 11, one-level refrigerated water water cooler 10 is reclaimed.
Sequentially connect rear class runner 9 cooling zone after one pipeline connection air, the import and export of first-class heat exchanger 15 cold air, rear class runner 9 breeding blanket, blower fan 12, two grades of water quench devices, 17, two grades of refrigerated water water coolers 14 be sent to emission-control equipment after reclaiming DMAc or DMF further.
Above-described embodiment is that the present invention preferably implements mode; but embodiments of the present invention are not restricted to the described embodiments; the change done under the spirit of other any the present invention of not deviating from and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, it is included within protection scope of the present invention.
Claims (5)
1. dry-spinning organic solvent reclaims and nitrogen circulation operation, it is characterised in that: outside spinning stack, it is provided with spinning river in Zhejiang Province gas treating system, spinning stack is respectively equipped with the import (a) of high nitrogen concentration, high-temperature gas from top to bottom; Containing the discharge outlet (b) of organic solvent gas; The inlet mouth (c) of high nitrogen concentration, secondary high-temperature gas; The venting port (d) of cooling air, spinning river in Zhejiang Province gas treating system comprises gas processing loop I and gas processing loop II, gas processing loop I reclaims from the most of solvent discharge outlet (b) expellant gas, and send spinning river in Zhejiang Province back to from import (a) after the gas after runner adsorption treatment is heated to together with supplementary nitrogen the temperature of needs, the further Separation and Recovery organic solvent of gas processing loop II, and send the gas after runner adsorption treatment back to spinning river in Zhejiang Province from inlet mouth (c); The energy of self is utilized to complete cooling and the manipulation of regeneration of runner by the design of pipeline.
2. operation according to claim 1, it is characterized in that: gas processing loop I comprises interchanger, prime runner, well heater, from discharge outlet (b) expellant gas, major part DMAc or DMF condensation after interchanger is reclaimed, this strand of air-flow becomes after clean gas is heated to the temperature of needs together with supplementary nitrogen behind prime runner treatment zone sends spinning river in Zhejiang Province back to from import (a), one branch road is connected interchanger and runner cooling zone, utilize autogenous energy resources cooling prime runner, clean gas part is shunted by another branch road, access gas processing loop II after being connected prime rotary wheel regeneration district and further separate process.
3. operation according to claim 2, it is characterized in that: gas processing loop II comprises water cooler, rear class runner, rear class well heater, DMAc or DMF is reclaimed further through water cooler from gas processing loop I expellant gas, this strand of air-flow sends spinning river in Zhejiang Province through rear class heater heats back to from inlet mouth (c) behind rear class runner treatment zone, is sent to emission-control equipment after utilizing air to connect rear class runner cooling zone, the import and export of interchanger cold air, rear class rotary wheel regeneration district, water cooler.
4. dry-spinning organic solvent reclaims and nitrogen circulation using appts, it is characterized in that: gas processing loop I comprises first-class heat exchanger (15), secondary heat exchanger (1), cooling water heat exchanger (2), refrigerated water interchanger (3), prime runner (4), well heater (12) and blower fan, sequentially connect first-class heat exchanger (15) hot gas from discharge outlet (b) expellant gas to import and export, secondary heat exchanger (1) hot gas is imported and exported, cooling water heat exchanger (2), refrigerated water interchanger (3), prime runner (4) treatment zone, secondary heat exchanger (1) cold air sends spinning river in Zhejiang Province back to from import (a) after heating with nitrogen together heater via (12) after importing and exporting, one branch road is connected from refrigerated water interchanger (3) venting port, prime runner (4) cooling zone is to cooling water heat exchanger (2) inlet mouth, another branch road is sequentially connected secondary heat exchanger (1) cold air outlet, gas processing loop II is accessed behind prime runner (4) breeding blanket, often prop up pipeline and it is connected to blower fan.
5. using appts according to claim 4, it is characterized in that: gas processing loop II comprises water quench device (11, 17), refrigerated water water cooler (10, 14), rear class runner (9), rear class well heater (8) and blower fan, one-level water quench device (11) is sequentially connected from described gas processing loop I expellant gas, one-level refrigerated water water cooler (10), spinning river in Zhejiang Province is sent through rear class well heater (8) heating back to from inlet mouth (c) behind rear class runner (9) treatment zone, rear class runner (9) cooling zone is sequentially connected after one pipeline connection air, first-class heat exchanger (15) cold air is imported and exported, rear class runner (9) breeding blanket, two grades of water quench devices (17), it is sent to emission-control equipment after two grades of refrigerated water water coolers (14), the described pipeline that often props up is connected to blower fan.
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| CN201310715976.2A CN103668489B (en) | 2013-12-23 | 2013-12-23 | Dry-spinning organic solvent reclaims and nitrogen circulation operation and device thereof |
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| CN201310715976.2A CN103668489B (en) | 2013-12-23 | 2013-12-23 | Dry-spinning organic solvent reclaims and nitrogen circulation operation and device thereof |
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| CN103668489B true CN103668489B (en) | 2016-06-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104342785A (en) * | 2014-11-17 | 2015-02-11 | 马军 | Dry spinning organic solvent recovery and air circulating use method |
| CN108079744A (en) * | 2017-12-20 | 2018-05-29 | 广州黑马科技有限公司 | A kind of organic solvent recovery device and drying tunnel drying system |
| CN109295525B (en) * | 2018-09-21 | 2020-11-20 | 义乌华鼎锦纶股份有限公司 | Preparation method of polyimide fiber filament |
| CN113195818B (en) * | 2018-12-21 | 2023-04-21 | 三井化学株式会社 | Cooling system and separation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213745A (en) * | 1991-12-09 | 1993-05-25 | Allied-Signal Inc. | Method for removal of spinning solvent from spun fiber |
| DE4401407A1 (en) * | 1994-01-19 | 1995-08-03 | Degussa | Process for the purification of exhaust gases under pressure by catalytic afterburning |
| CN1590602A (en) * | 2003-09-03 | 2005-03-09 | 中国石油化工股份有限公司 | Dry spinning hot air circulation device |
| CN102527073A (en) * | 2010-12-16 | 2012-07-04 | 中国船舶重工集团公司第七一一研究所 | Adsorption-condensation composite oil gas recovering device and oil gas recovering method |
-
2013
- 2013-12-23 CN CN201310715976.2A patent/CN103668489B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5213745A (en) * | 1991-12-09 | 1993-05-25 | Allied-Signal Inc. | Method for removal of spinning solvent from spun fiber |
| DE4401407A1 (en) * | 1994-01-19 | 1995-08-03 | Degussa | Process for the purification of exhaust gases under pressure by catalytic afterburning |
| CN1590602A (en) * | 2003-09-03 | 2005-03-09 | 中国石油化工股份有限公司 | Dry spinning hot air circulation device |
| CN102527073A (en) * | 2010-12-16 | 2012-07-04 | 中国船舶重工集团公司第七一一研究所 | Adsorption-condensation composite oil gas recovering device and oil gas recovering method |
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